东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (1): 102-105.DOI: -

• 论著 • 上一篇    下一篇

原位合成(O′+β)-Sialon/莫来石复合材料

马北越;厉英;徐礼兵;翟玉春;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    中国博士后科学基金资助项目(20100471467);;

In-situ synthesis of (O'+β)-Sialon/mullite composite materials

Ma, Bei-Yue (1); Li, Ying (1); Xu, Li-Bing (1); Zhai, Yu-Chun (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Ma, B.-Y.
  • About author:-
  • Supported by:
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摘要： 以粉煤灰和炭黑为原料,采用碳热还原氮化法原位合成了(O′+β)-Sialon/莫来石复合材料.通过XRD和SEM研究了配炭量对合成材料相组成和显微结构的影响,并分析了材料的生成过程.研究结果表明,增加配炭量有利于O′-Sialon和β-Sialon的生成;将粉煤灰与炭黑质量比为100/42和100/56的试样加热至1 350℃并保温6 h可以合成(O′+β)-Sialon/莫来石复合材料,且合成材料中O′-Sialon和β-Sialon多以粒状形式存在,平均粒径约为1μm;(O′+β)-Sialon/莫来石复合材料的生成过程包括O′-Sialon和β-Sialon的生成及O′-Sialon向β...

关键词: 复合材料, Sialon, 莫来石, 碳热还原氮化法, 原位合成, 粉煤灰

Abstract: (O'+β)-Sialon/mullite composite materials were synthesized by in-situ carbothermal reduction-nitridation process, with fly ash and carbon black as raw materials. The influences of carbon content on phase composition and microstructure of the synthesized materials were investigated by XRD and SEM, and the formation process of the materials was analyzed. The results indicated that increasing carbon content benefits the formation of O'-Sialon and β-Sialon. The (O'+β)-Sialon/mullite composite materials can be synthesized at 1350°C for 6 h, where the mass ratio of fly ash to carbon black in samples are 100/42 and 100/56 separately. The O'-Sialon and β-Sialon in the synthesized materials are in particle shape with an average grain size about 1 μm. The formation process of (O'+β)-Sialon/mullite composite materials consists of the formation of O'-Sialon and β-Sialon in addition to the conversion process of O'-Sialon to β-Sialon.

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